If you higlight the dimension and go to the "Leaders" tab under Custom Teext Position select the horizontal position (Center icon of the 3). I belive you are already using the inline with the dimensions setting, the only other option is above the line which would not look good either. Soemthing else I would do is when you click on the dimension you see the Dimension Text box under the "Value" tab, you can put line breaks in by using the Enter key on your keyboard, this makes the text taller and not as wide. This is the way that I would show it on a drawing.

I can't find a way to get text in a drawing to follow a curve. The only way I know of to do this is with text in a sketch (in a part).

This does make it possible to achieve the goal, in a roundabout fashion.

The "dimension" and text shown in the drawing is actually a sketch in the part. The "90°" in the text is linked to a file property which references dimension D1 in sketch1, this way the dimension value is linked to the part. There is also an arc in that sketch which is used to position the text. The text is in sketch2. In the drawing sketch2 is set to show. To get the dimension line I inserted an angle dimension, set the text position to be above the dimension line (this way the line is continuous) and then deleted the dimension text (the <DIM> in the feature manager). Drag the dimension line until it is aligned with the text in sketch2.

The sketch text is not solid but an outline so you will need to play around and find a font that looks OK for you.

Do you mind me asking why is it so important for the text to follow the curve? It seems like so much effort to make it follow the curve as there is no easy way to do it in the dimensions for a note on a drawing? I'm just courious as to way you want it to follow the curve other then to make it look cool?